Virtualization Security

5 minutes 5 Questions

Virtualization Security is the practice of protecting virtualized infrastructure, such as virtual machines, hypervisors, and virtual network resources, from security threats and vulnerabilities. This involves the use of security tools, policies, and procedures that are tailored to the unique challenges and risks associated with virtualized environments. Key concepts of virtualization security include securing the hypervisor from unauthorized access, implementing an effective network segmentation strategy, using secure boot to protect the integrity of virtual machines, and employing security best practices to protect virtual machines from cyberattacks. Virtualization security also encompasses monitoring and detecting threats in virtual environments and ensuring adequate isolation between virtual resources.

Guide to Virtualization Security

What is Virtualization Security?
Virtualization Security is the process of ensuring data safety in a virtual environment. It involves the application of security measures to protect virtual machines, data, and applications from threats.

Why is it important?
It is crucial for preserving the integrity, availability, and confidentiality of data and services in virtual environments. It helps prevent unauthorized access and potential loss of data.

How it works?
Virtualization security works by incorporating various measures such as correct configuration, proper access controls, monitoring and logging activities, regular updates, and security hardening of virtual machines.

Exam Tips: Answering Questions on Virtualization Security
1. Understand the concept of Virtualization Security and its applications.
2. Be familiar with common threats to virtual environments and the methods of their prevention.
3. Get a good grasp of different security measures and their application in virtual environments.
4. Learn about the best practices of secure virtualization.
5. Practice with exam questions related to Virtualization Security to gain confidence.

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Question 1

A virtualization administrator notices that a virtual machine (VM) cluster is experiencing poor performance. Investigation shows that one VM is consuming more resources than others. How should the administrator address this issue?

Increase the VM's storage capacity Split the VM cluster into multiple smaller clusters Upgrade the host's hardware Implement resource allocation policies on the VM cluster

Correct Answer: Implement resource allocation policies on the VM cluster

Resource allocation policies can help balance resources among VMs in a cluster, ensuring that one VM cannot consume an excessive amount of resources. Upgrading hardware or increasing VM storage might not fix the problem. Splitting clusters or disabling unused VMs won't necessarily resolve the issue, and encrypting VM files relates to data security, not resource consumption.

Question 2

A company is running its web server in a virtualized environment. The server has been experiencing multiple brute-force attacks in the last week. Which security control should be implemented to mitigate this?

Implementing an Intrusion Prevention System (IPS) Encrypting the virtual hard disks Applying MAC address filtering Increasing the virtual network adapter bandwidth

Correct Answer: Implementing an Intrusion Prevention System (IPS)

Implementing an Intrusion Prevention System (IPS) will help prevent brute-force attacks by monitoring the network for malicious activities and blocking traffic accordingly. Encrypting virtual hard disks addresses data protection but does not mitigate the attack. MAC address filtering and VLANs address network segmentation, not brute-force mitigation. Increasing network adapter bandwidth or enabling NAC wouldn't prevent the attacks either.

Question 3

An organization wants to ensure integrity of its virtual machines from potential tampering. Which technology should the organization use?

IDS VM Encryption NAT SNMP

Correct Answer: VM Encryption

VM encryption allows virtual machines to be encrypted, ensuring the integrity and confidentiality of the VM data. NAT, IDS, SNMP, Vmotion, and RAID serve other purposes and do not specifically address VM tampering.

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